Chelsio Communications Chelsio T4 Guía de usuario descargar pdf (Pagina 190)

100

101

Chapter XIII. Bypass Driver

old_id

Existing rule index.

new_id

New rule index.

redirect ethX

count

table

table id

Display a count of the number of

packets and bytes has matched a rule.

index

rule index

redirect ethX

create_table

table

table id

Create a new table that is used to hold

a set of rules.

redirect ethX

activate_table

table

table id

Activate a table so that all the rules in

it will be active.

redirect ethx

deactivate_table

table

table id

Deactivate a table and its associated

rules.

redirect ethX

delete_table

table

table id

Delete a table and the rules in it.

redirect ethX

dump

dump all tables and rules as

commands

* The matching algorithm for srcportmask and dstportmask is

(Ingress_Packet-Field & Filter-Mask) == (Filter-Value & Filter-Mask)

4.2.6. Managing persistent tables and rules

This example creates a new table with table id 1 and then adds a rule to drop all ICMP packets

for port 0. The rules in a table are not active until the table is activated.

Create a table:

[root@host]# redirect ethX create_table --table 1

Activate the table:

[root@host]# redirect ethX activate_table --table 1

Add a rule to the newly created table:

[root@host]# redirect ethX add --table 1 --proto icmp –-action drop –-port 0

The redirect dump command can be used to save the currently configured tables and rules

into a shell script.

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